scholarly journals Hydrogeology of Mangsri Cave, Gunungsewu Karst Area, Java Island, Indonesia

2021 ◽  
Vol 5 (1) ◽  
pp. 1-6
Author(s):  
Ahmad Cahyadi ◽  
Hilary Reinhart ◽  
Angga Wahyu Ristiawan ◽  
Rakhmat Dwi Putra ◽  
M. Ainul Labib ◽  
...  
Keyword(s):  
Local Population ◽  
Water Storage ◽  
Karst Area ◽  
Remote Sensing Images ◽  
Recharge Area ◽  
Small Catchment ◽  
Geological Surveys ◽  
Groundwater Basin ◽  
Underground River ◽  
Hydrogeological Analysis

The Gunungsewu karst area is not only known for its unique landscape but also its recurring drought events. To meet the water supply, the local population utilizes several water potentials, namely doline pond, spring, and underground river. This study was designed to analyze the hydrogeological conditions of Mbangsri Cave, following its accidental discovery by the community at the end of 2018. The hydrogeological analysis was conducted by geological surveys, which consisted of rocks collection and structural measurements, cave mapping, and recharge area delineation based on remote sensing images acquired by unmanned aerial vehicles. The results showed that Mbangsri Cave, in the hydrogeological perspective, had low water resources potential. It is believed to be the result of (1) relatively small catchment area, (2) a fault in the southern part of Mbangsri Cave, creating a small groundwater basin, and (3) the thin epikarst layer, limiting the water storage.

scholarly journals Analysis of Cavities Characteristics in the Semar - Kiskendo Caves System, Jonggrangan Karst Area, Kulon Progo, Indonesia

2019 ◽  
Vol 125 ◽  
pp. 01016
Author(s):  
Romza Fauzan Agniy ◽  
Risma Sari Septianingrum ◽  
Ariel Seto Adinugraha ◽  
Qodri Alghozali ◽  
Bagas Aditya ◽  
...  
Keyword(s):  
Water Source ◽  
Average Diameter ◽  
Tracer Test ◽  
Karst Area ◽  
Survey Method ◽  
Cave System ◽  
Underground River

The Kiskendo Cave System is a system that has many benefits, including as a tourist site and water source. One of the systems in the upstream of Kiskendo Cave is the Semar-Kiskendo Caves system. This system is estimated to greatly affect the condition of the Kiskendo cave system because it is connected to the allogenic river which contributes to recharge from outside Jonggrangan Karst Area. The purpose of this research was 1) to find out the characteristics of the Semar Cave cavities and 2) to analyze the connectivity and characteristics of cavities in the Semar - Kiskendo Caves system. This research employed a survey method by mapping the cave to answer the first problem and conducting a tracer test of underground river stream to answer the second problem. The results showed that the Semar Cave cavity that could be mapped was 158.2 meters long, the total volume of the cave was 1,220.6 m3, and the average diameter of the cave cavity was 2.8 meters. The results of second study using the tracer test showed the connection between Semar Cave and the underground river in Kiskendo Cave, and the cavities had a characteristic of a single conduit which was sufficiently developed.

scholarly journals The Evaluation of Soil Water Storage in A Small Catchment in 2009 And 2010

2014 ◽  
Vol 17 (1) ◽  
pp. 1-4
Author(s):  
Ľuboš Jurík ◽  
Tatiana Kaletová
Keyword(s):  
Soil Water ◽  
Soil Profile ◽  
Water Storage ◽  
Vertical Direction ◽  
Field Capacity ◽  
Mean Value ◽  
Soil Water Storage ◽  
Volumetric Soil Water Content ◽  
Small Catchment ◽  
High Precipitation Events

Abstract The soil water storage in a soil profile was calculated from the measured values of volumetric soil water content by the Profile Probe PR2/6 (Delta-T Device Ltd.) in the Bocegaj catchment in the depth up to 1m. The monitored season in the year 2009 followed after a dry season, and in the year 2010, rainfalls were above the average values. The soil water storage was higher than the mean value of field capacity during the season with high precipitation events. With a decreased amount of rainfalls, rising air temperature and crops growing, the soil water storage was in recession. In the vertical direction, the volumetric soil moisture as well as soil water storage in every soil profile have their characteristic progresses.

scholarly journals Determination Of Groundwater Recharge Area In Raimanuk And Surroundings, Timor Island

2021 ◽  
Vol 930 (1) ◽  
pp. 012059
Author(s):  
W F Manta ◽  
H Hendrayana ◽  
D H Amijaya
Keyword(s):  
Groundwater Recharge ◽  
Spatial Data ◽  
River Flow ◽  
Spatial Data Analysis ◽  
Conservation Areas ◽  
Recharge Area ◽  
Groundwater Availability ◽  
Plain Area ◽  
Groundwater Basin

Abstract The Raimanuk area in Timor, East Nusa Tenggara, is located in the Aroki Groundwater Basin. The decreasing quality and potential groundwater availability in the Aroki Groundwater Basin is feared due to its widespread use for household needs and agriculture. The lack of the groundwater recharge area map will pose an obstacle in policymaking regarding the management and preparation of spatial conservation areas in the Raimanuk Region. This study aims to determine the zone and classification of groundwater recharge areas in the Raimanuk area based on spatial data analysis. The groundwater recharge area can be determined using slope, river flow patterns, spring emergence, and groundwater table depth. The classification of the recharge area uses a scoring approach with an overlapping analysis of the parameter assessments, which are hydraulic conductivity, precipitation, soil cover, slope, and depth of unconfined groundwater. The result of the study is the groundwater recharge area map of Raimanuk. The groundwater recharge area is located in the Mandeu Hill area, which is the main recharge area. The groundwater discharge area is located in the Aroki plain area that can be the main recharge area.

scholarly journals The Effectiveness of Wenner-Schlumberger and Dipole-dipole Array of 2D Geoelectrical Survey to Detect The Occurring of Groundwater in the Gunung Kidul Karst Aquifer System, Yogyakarta, Indonesia

2016 ◽  
Vol 1 (2) ◽  
pp. 71 ◽  
Author(s):  
Oktanius Richard Hermawan ◽  
Doni Prakasa Eka Putra
Keyword(s):  
Karst Aquifer ◽  
Groundwater Exploration ◽  
Karst Area ◽  
Karst Terrain ◽  
Aquifer System ◽  
Crystalline Limestone ◽  
Karst Aquifer System ◽  
Dipole Configuration ◽  
Underground River ◽  
Water Saturated

Until today, geoelectrical survey is the most effective method for groundwater exploration. 2D method or known as horizontal profiling is now the most appropriate method in the geoelectrical survey compare to vertical electrical sounding method. The 2D method of Wenner-Schlumberger and Dipole-dipole configuration proved to be very effective to locate conventional aquifer occurrence on volcanic terrain or sedimentary terrain. Karst aquifer system is an unconventional aquifer and acts very differ in contrast with the conventional sedimentary aquifer. Heterogeneity and discontinuity of limestones in karst terrain will reveal a wide variety of resistivities, hence it is difficult to interpret. This research has important objective to define the effectiveness of the Wenner-Schlumberger and Dipole-dipole configuration in the 2D geoelectrical survey to explore groundwater in the karst area. Field observation of geology and 2D geoelectrical survey were conducted in underground river of Kali Suci Area, Gunung Kidul. In Kali Suci where an endokarst cave was occured on the surface, line survey was placed in the top of the cave and across the geometry of the cave. Measured stratigraphy in the wall of the cave found four types of limestone which consist of packstone, wackestone, grainstone and crystalline limestone. The Wenner-Schlumberger and Dipole-dipole method can detect differentiation of limestone types and also the exposed underground river successfully. However, compared to Wenner-Schlumberger array, Dipole-dipole array reveals less vertical accuration.. Therefore, on this research, the best method to detect water saturated zone or gourndwater in the karst system is the Wenner-Schlumberger method.

scholarly journals STUDY ON KARST INFORMATION IDENTIFICATION OF QIANDONGNAN PREFECTURE BASED ON RS AND GIS TECHNOLOGY

2018 ◽  
Vol XLII-3 ◽  
pp. 2121-2125
Author(s):  
M. Yao ◽  
G. Zhou ◽  
W. Wang ◽  
Z. Wu ◽  
Y. Huang ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Karst Area ◽  
Karst Region ◽  
Karst Collapse ◽  
Distribution Map ◽  
Visual Interpretation ◽  
Remote Sensing Images ◽  
Karst Rocky Desertification ◽  
Rocky Desertification ◽  
Karst Areas

Karst area is a pure natural resource base, at the same time, due to the special geological environment; there are droughts and floods alternating with frequent karst collapse, rocky desertification and other resource and environment problems, which seriously restrict the sustainable economic and social development in karst areas. Therefore, this paper identifies and studies the karst, and clarifies the distribution of karst. Provide basic data for the rational development of resources in the karst region and the governance of desertification. Due to the uniqueness of the karst landscape, it can’t be directly recognized and extracted by computer in remote sensing images. Therefore, this paper uses the idea of “RS + DEM” to solve the above problems. this article is based on Landsat-5 TM imagery in 2010 and DEM data, proposes the methods to identify karst information research what is use of slope vector diagram, vegetation distribution map, distribution map of karst rocky desertification and other auxiliary data in combination with the signs for human-computer interaction interpretation, identification and extraction of peak forest, peaks cluster and isolated peaks, and further extraction of karst depression. Experiments show that this method achieves the “RS + DEM” mode through the reasonable combination of remote sensing images and DEM data. It not only effectively extracts karst areas covered with vegetation, but also quickly and accurately locks down the karst area and greatly improves the efficiency and precision of visual interpretation. The accurate interpretation rate of karst information in study area in this paper is 86.73 %.

scholarly journals Soil moisture observation in a forested headwater catchment: combining a dense cosmic-ray neutron sensor network with roving and hydrogravimetry at the TERENO site Wüstebach

2021 ◽  
Author(s):  
Maik Heistermann ◽  
Heye Bogena ◽  
Till Francke ◽  
Andreas Güntner ◽  
Jannis Jakobi ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Sensor Network ◽  
Root Zone ◽  
Water Storage ◽  
Cosmic Ray ◽  
Water Dynamics ◽  
Catchment Scale ◽  
Small Catchment ◽  
Hill Slope ◽  
The Hill

Abstract. Cosmic Ray Neutron Sensing (CRNS) has become an effective method to measure soil moisture at a horizontal scale of hundreds of meters and a depth of decimeters. Recent studies proposed to operate CRNS in a network with overlapping footprints in order to cover root-zone water dynamics at the small catchment scale, and, at the same time, to represent spatial heterogeneity. In a joint field campaign from September to November 2020 (JFC-2020), five German research institutions deployed 15 CRNS sensors in the 0.4 km2 Wüstebach catchment (Eifel mountains, Germany). The catchment is dominantly forested (but includes a substantial fraction of open vegetation), and features a topographically distinct watershed. In addition to the dense CRNS coverage, the campaign featured a unique combination of additional instruments and techniques: hydro-gravimetry (to detect water storage dynamics also below the root zone); ground-based and, for the first time, airborne CRNS roving; an extensive wireless soil sensor network, supplemented by manual measurements; and six weighable lysimeters. Together with comprehensive data from the long-term local research infrastructure, the published dataset (available at https://doi.org/10.23728/b2share.afb20a34a6ac429ca6b759238d842765) will be a valuable asset in various research contexts: to advance the retrieval of landscape water storage from CRNS, wireless soil sensor networks, or hydrogravimetry; to identify scale-specific combinations of sensors and methods to represent soil moisture variability; to improve the understanding and simulation of land-atmosphere exchange as well as hydrological and hydrogeological processes at the hill-slope and the catchment scale; and to support the retrieval soil water content from airborne and spaceborne remote sensing platforms.

Modeling of mixed karstic and alluvial recharge area for the drainage capture in Radovna River valley, Julian Alps (NW Slovenia)

2020 ◽  
Author(s):  
Mihael Brencic ◽  
Jernej Loboda ◽  
Andrej Germovšek ◽  
Carina Greiner ◽  
Mateja Jelovčan ◽  
...  
Keyword(s):  
Numerical Model ◽  
Karst Aquifer ◽  
High Water ◽  
Drainage Water ◽  
River Valley ◽  
Karst Area ◽  
High Yield ◽  
Recharge Area ◽  
River Bed ◽  
Julian Alps

<p>In the Radovna River valley (NW Slovenia) in fluvioglacial sediments with high permeability and high yield, drainage capture supplies drinking water to over 20,000 inhabitants and extensive tourist facilities in one of the most important Slovenian tourist centers of Bled in the Gorenjska region. Drainage is dug at a depth of 10.0 m to 5.5 m and is 235 m long. It runs parallel to the river at a distance of 30 to 60 m. The total drainage flow ranges from 0.40 to 0.60 m<sup>3</sup>/s.</p><p>The Radovna River valley is a deep glacial valley with karstic plateaus on both sides of the valley. On the plateaus, sinkholes and smaller karst poljes are developed. The thickness of the fluvioglacial sediment in the valley exceeds 140 m. The position of the recharge area is such that it includes water infiltrating through the fluvioglacial sediment from the river and water infiltrating from the karst aquifer through the fluvioglacial sediment. The ratio of drainage water originating from the karst area and the river changes throughout the hydrological season. The proportion of water from the karstic plateau is higher in the high-water condition, and in the low-water conditions, water from the river bed is almost entirely dominant.</p><p>The paper presents a numerical model of groundwater flow toward the drainage, modeling both the inflow from the river area and the inflow from the karstic aquifer. The modeling is performed using the MODFLOW numerical model in the FREEWAT modeling environment.</p>

scholarly journals Biodiversity of Rambut Cave Sale Central Java

2021 ◽  
Vol 896 (1) ◽  
pp. 012006
Author(s):  
S Rachmawati ◽  
H H A Matin ◽  
S Suhardono ◽  
P Setyono ◽  
L Kusumaningrum ◽  
...  
Keyword(s):  
Diversity Index ◽  
Karst Area ◽  
Central Java ◽  
Study Results ◽  
Groundwater Basin ◽  
Index Value ◽  
Flora Diversity ◽  
Horseshoe Bats

Abstract Rembang zone karst area stretches from Central Java to Madura Islands. This area is the most significant water or groundwater basin (CAT) area in Rembang Regency, often known as Watuputih Mountains or Karst Area. Watuputih Groundwater Basin is a karst area that is characterized by the formation of several caves. Rambut Cave is one of the caves in Watuputih area located to the east of Watuputih with coordinate’s point −6.8783, 111.5534. There are seven types of flora found in the Rambut Cave, namely Horseshoe Bats, Bent-Wing Bats, Ants, Geckos and Crickets, Forest Grasshoppers, and Snails. While the flora was found, there are six types of Bauhinia scandens, Suweg, Mahogany, Drypetes littoralis, Yellow Palm, and Teak trees. The study results obtained the Flora Diversity Index Value H=0.687, which belongs to the low category, and the value of Fauna Diversity Index H’=1.414, which belongs to the medium category.

Sign in / Sign up

Export Citation Format

Share Document